Furnace Installation in Schenectady, NY
A new furnace here will run from October through May every year. Tell us about the house, and a licensed contractor who covers Schenectady County will get in touch.
Tell us about the job
It takes about a minute.
Eight months of heat, and nights near 17 degrees
Furnaces here run from October through May. That is eight months of the year the burner has to work, not just a handful of cold weeks. On a winter night averaging 17°F, a furnace that is undersized or wearing out will run close to nonstop trying to keep up.
Most homes in the area heat with gas, and any new gas furnace installed now has to reach at least 80.0 percent AFUE, the federal minimum for non-weatherized models. The area has recorded 45 winter storms and 188 damaging wind events over the past ten years, and 11 percent of households in the state went at least 24 hours without power in 2024. A furnace that comes back on by itself once power returns matters here.
- 8 months
- October through May, your furnace is on duty
- 17°F
- the average winter night it heats against
- 69%
- of homes here heat with gas, so most furnaces here burn gas
- 80% AFUE
- the federal minimum any new unit must meet

NOAA nClimDiv, 1991–2020 normals
A high-efficiency gas furnace would save about $150 a year to run in Schenectady County compared with a gas furnace.
Estimates for a typical Schenectady County home, from EIA household energy data, New York fuel prices and NOAA climate normals. Your home will differ.
- What size furnace does my house need?
- It depends on your square footage, how well the house is insulated, your window count, and your ceiling height, so there's no number that fits every home. A contractor sizes it with a load calculation, not a chart based on square footage alone. Going bigger than what the house needs isn't safer either. An oversized furnace cycles on and off more, which wears out parts faster and leaves rooms uneven. With winter lows here averaging 17°F, getting the size right matters more than it would somewhere milder, so ask that the contractor walk you through the load calculation before they quote a unit.
- How do I know it's time to replace my furnace?
- If it's breaking down more than once a season, or a repair is going to cost close to what a new unit would run, that's usually the sign. Watch for uneven heat between rooms, a furnace that runs longer to reach the same temperature, or a yellow flame instead of blue. Past a certain age, parts get harder to find and efficiency drops even if the furnace is still running. Homes here need heat from October through May, so a furnace on its way out gets tested for eight months of the year, not just a few cold weeks.
- Is a high-efficiency furnace worth it?
- It depends on how many months your furnace runs and what you're replacing. Every non-weatherized gas furnace made after November 2015 already has to hit at least 80 percent AFUE, so the real question is whether a model above that baseline is worth the extra cost. Homes here need heat from October through May, eight months a year, and more run time is exactly what lets a higher-efficiency furnace earn back the difference in fuel use. A contractor can run the numbers for your specific house and current system before you decide.


